Inststjment fob ttse in commdisricatioh



- July 27 1926.

BEST AVA1LABLE com 1,593,779 w. J. scorr 1T0NE CLARIFTYING INSTRUMENT, FOR USE IN COMMUNICATIO N Filed Jan. 1921 4 sheets-sheen I l l T 3 1 a Jfzllzam James 5002? I BESTAVAILABLE 0 July 27,1 26. 1,593,119

w, J, SCOTT TONE CLARIFYING INSTRUMENT FOR USE IN COMMUNICATION Filed Jan. 2 1921 4 Sheets$heet 2 FlCii Y @nVenior 74 zZZzam James Scoit J uly.=- 27 1926, "1,593,779

J. SCOTT,

110m: CLARIFYING ms'rnumnm FOR USE IN commuuxcuxok- Filed Jan. 1921: I 4 sheets-sheet 5 2112mm James 5602? EBE;

STAVA L E CO July 27,1926. 1,593,179

W. J. SCOTT I 'TGNE cLARiFYINe INSTRUMENT FOR USE IN COMMUNICATION Jhvenior )VZZZZam James 6601b Gag W plates 19, 19.

communication in. connection with the use of apparatus, a'loud-sp'eakerl'? may be inserted in the sound receiving chamber.

The ends of the small selecting tubes 4 are mounted in flanged plates 18, 18, while the main leads 5 are also mounted in flanged 4 It'will be understood,-of course, that the selecting tubes 4, leads 5, plates 18 and 19,

[and tube 6, all move as one element when the size of the sound receiving chamber is adjusted for varying pitch.

In order that the various elements may be removed from the'cylindrical body 1, it is preferable to have the end wallsthereof 20, det'achably mounted, as shown.

In operation for inter-communication be tween persons on the same aircraft, and assumin the speaker-is at the right (Fig. 1),-

then the path of the waves will be as shown by the arrows. The sound travels through tube 2 to the sound receiving chamber where it is broken u and passes to the right and left through t 1e small selecting tubes 4 and is reunited in the sound transmitting chamber,,fromwhich it passes to the right and no: through 'the receiying tubes 1, 7, the speaker hearing his voice as well as the 11stcncr- In the passagethrough the selecting tubes 4, sound waves other than-those of the voice are so broken up that they apparently die away, so that when the waves are reunited in chamber 6 substantially only the voice waves remain.

To adjust the instrument for different pitches it is only necessary to move the lever 8, thereby moving the two sets of selecting tubes and their connecting parts to increase or decrease the size of the sound receiving chamber.

For use in connection with wireless tele:

phone: or telegraph communication it is only necessary to' insert the loud speaker in thesound -i'ece-iving chamber and theipp'eration of my clarif ing device or interference'eliminator will be the same as that previously described. l

With reference to Fi re.5, the'construction is the same as that isclosed in Figure 1 except that I provide a detachable connection between the tube 6 and the main leads 5. For this purpose the leads 5 are beaded as shown at 21. the ends of the leadsbeing re- "ceived in suitable apertures-in a plate 22.

The operating shank IOis provided with a. shoulder '22 which abuts asuitably shaped plate 23 engaging the. curved portions of main leads 5. The shank 10 screws into the late 22 whereby the leads 5 are'securely held inposition. In this construction the microphone may be screwed onto the end of the shank 10 or otherwise secured in place.

The construction shown in Figure 6 is somewhat similar to that already described,

though in this case only one set of selecting uur'i tubes 4 is used, and I provide no ineans for adjusting the size of the sound receiving I chamber 3. The passage of the sound waves in this case is, however, quite different. Here the waves after being broken up in selecting tubes 4 pass through suitable tubes 24 and are reunited in the chamber 25, passing up? wardly through this chamber the-waves strike the deflector 26 and are deflected downwardly thereby into the tube 27 which gradually tapers to the point 28 where it divides into, the two receiving tubes 7, The gradual taper is continued in the receiving tubes to the point where the flexible hosing is attached.

With reference to the further modification shown in Figure 7, the speaking tubes 2, 2, communicate with the selecting tube receiving chamber 3 as before described. In this case, however, alternate sets of selecting tubes 4 communicate directly with the selecting tube transmitting chamber 28, near the bottom thereo t, as shown at'29, while the other alternate sets of selecting tubes communicate with the sound transmitting chamber at a pointrelatively remote from the bottom of said' chamber and by means of a. series of small tubes 30, for a purpose to be describedhereinafter.

The sound transmitting chamber is formed by two telescopically arranged tubes 31 and 32, the former being stationary. Connected to the movable portion 32 isa screw threaded rod 33, which receives an adjusting nut 34 at its upper end whereby the tube 32, the selecting tubes' l, and the plates 35 and 36 supporting the selecting tubes, may be moved longitudinally to adjust the size of the sound rcccivin chamber 8-.

All of the selecting tubes are in communication withthe sound transmitting chamber 28 in the position shown in Figure 7, but if the tube 32 is given suflicient longitudinal rut) ossible I includes the complete sound conducting and more or less extended and circuitous passage leading initially from the sound receiving or rcverberatory chamber) contemplates its employment as a transmitter in connection with suitable conventional or approved means,

such as wire conductors leading to a receiver,

and serving as a prefcrrcdor auxiliary means of taking the message. The more- .v I "VHIMBLE with, and means for breaking'up and'reuniting, sound waves received in said chamber.

7. An interference eliminator including a sound receiving chamber, a speaking tube communicating therewith, tubes. for breaking up sound waves, a sound transmitting chamber communicating with said tubes, and arecciver tube communicating with said sound transmitting chamber.

8. An instrument for clarifying audible messages having a chamber of variable capacity, and a tubular conveyor communicating with said chamber and of a linear extent rapable of responding throughout its length to sound waves olf sustained characteristics.

9. A tone clarifying instrument for use in the transmission of audible messages in the presence of disturbing and ear distracting sounds, consisting of a. drum having a chamber tunable to respond to wave lengths at a selected pitch and a conveyor tube for receiving and conducting the responsive vibrations from said chamber.

10. A tone clarifying instrument for use in the transmissionof audible messages inthe presence of disturbing and ear distractiug' sounds, consisting of a drum having a resonating chamber tunable to respond to wave lengths at a selected pitch and a conveyor tube for receiving and conducting the.

responsive vibrations from said chamber.

11. A tone clarifying instrument for use in the transmission of messages in the pres ence of disturbing and ear distracting sounds, consisting of a. drum having a reverberatory chamber tunable to res 0nd to wave lengths at a selected pitch an a conveyor tube for receiving andconducting the responsive vibrations from said chamber.

12. it tone clarifying instrument for use in the transmission of messages in the,pres.

ence of disturb ng and ear distracting sounds, consistin of a drum having a chamber tunable to respond to wave lengths at a selected pitch and a. conveyor tube for receiving and conducting the responsive vibrations from said chamber andhaving its entrance terminal in prolongation of said chamber.

13. A tone clarifying instrument for use in the transmission'of messages in the presence of disturbing and ear distracting sounds, consisting of a drum having a.

chamber tunable to respond to wave lengths at a selected pitch and a conveyor tube for receiving and conducting the responsive v1- brutions from said chamber and having. a- 0 v 1 same, the passage being provided at opposite sides of the plane of the diaphragm subdivided entrance terminal.

14. A. tone clarifying instrument for use in the transmission of messages in the pres ence of disturbing and 'ear distracting sounds, consisting of a drum having a chamber tunable to respond to wave lengths at a selected pitch and a conveyor tube for receiving and conducting 'the res onsive vibrations from said chamber an having a subdivided entrance terminal of which the elements merge by graduated steps into a common passage.

15. A drum or housing havin a chamber adapted to be tuned to the pitc of the selected toneo r length of the selected sound waves, and an extended conveyor tube communicating with said chamber and exteriorly protected by the housing.

' 16. An apparatus for selectively distin guishing the tones of a transmitted messa from contemporaneous unrelated soun 5, having a transversely confined column of fluid lesponsiveto sound waves and provided at its receiving terminal with sub divisional confluent elements arranged in contributary relation with the body portion of the column.

17. An apparatus for selectively distinguishing the tones of a transmitted message guishing the tones of a. transmitted message from contemporaneous unrelated sounds,

havin' a transversely confined lineally extende column of fluid responsive to sound waves and havin a relatively reduced and minutely subdivided receiving terminal.

20. An instrument for selectively distinguishing the tones of a transmitted messa e om contemporaneous unrelated soun 3 having a sound transmitting. passage and a sub-dividing diaphragm intercepting the same, the passage having graduated: condensing means, in rear of the plane of the diaphragm.

21. An instrument for selectively distinuishing the tones of a transmitted messa rom contemporaneous unrelated soun 8 having a sound transmitting passage-and a sub-dividing diaphragm intercepting the respectively with expanding and condens- BEST AVAILABLE cor abruptly breaking up saidwaves and means for progressively reuniting said waves.

23. An instrument for use in a conveyor of audible messages having means for in- 5 tercepting discordant andunrelated sounds and including a. subdividing medium and progressively confluent assembling passages. 24. An instrument for-use in afconveyorphragm' disposed transversely in the path of sound waves and-graduated assembling passages for receiving the sound waves from the planeof the diaphragm.

' WILLIAM JAMES scor'r 

